Cover may refer to:

• A covering:
  • A lid or mechanical seal, usually one that completely closes the object
  • Album cover (see also: CD and DVD packaging)
  • Book cover or magazine cover
  • Cover (philately), generic term for envelope or package

• A concealment:
  • Undercover, disguising one's identity to learn secret information or to gain the trust of targeted individuals in order to obtain information or evidence.
  • Cover (military), a form of protection in combat
  • Cover (telecommunications), a communications concealment technique

• In entertainment:
  • Cover version, a new version of a previously recorded song
  • Cover band, a musical band that plays only cover versions
  • Cover is the term for an understudy in opera
  • Cover, a 1981 drama series from Thames Television, set in a recruitment and testing agency for the spy service
  • Cover, a 2007 film directed by Bill Duke
  • Franklin Cover (1928–2006), an American actor who played Tom Willis on The Jeffersons

• In science and mathematics:
  • Thomas M. Cover (1938–), American scientist
  • Cover (topology), the mathematical concept of a collection of subsets of a set whose union is the whole set
  • Cover (algebra), the concept of an algebraic structure that maps onto another structure in a structure-preserving fashion
  • A Covering space, in the theory of Riemann surfaces and topology
  • A (universal / double) covering group, a covering space with group structure, common in theoretical physics
  • Cover (geology) or sedimentary cover, overlies a basement (geology) or crystalline basement

• In sports:
  • Cover, a fielding position in cricket
  • Cover 2, a class of defensive play in American Football

• Other uses:
  • Cover charge, an entry fee
  • Cover (law), a remedy for the breach of a contract for the receipt of goods
  • Cover (finance), repurchasing a short order made on the stock/equity, forex or futures markets
  • Cover (database theory), an equivalent set of constraints in database theory
  • Mating of animals, e.g. a stallion covers a mare

Covers may refer to:

• Covers (EP), an EP by The Autumns
• Covers (Placebo album)
• Covers (Show of Hands album)
• Covers (James Taylor album)
• Covers (Fayray album)